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Journal of Medical Entomology

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https://www.readbyqxmd.com/read/28431125/corrigendum
#1
(no author information available yet)
No abstract text is available yet for this article.
April 20, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28431166/landscape-genetics-of-aedes-mcintoshi-diptera-culicidae-an-important-vector-of-rift-valley-fever-virus-in-northeastern-kenya
#2
Lindsay P Campbell, Alana M Alexander
Rift Valley fever virus (RVFV) is a vector-borne, zoonotic disease that affects humans, wild ungulates, and domesticated livestock in Africa and the Arabian Peninsula. Rift Valley fever virus exhibits interepizootic and epizootic phases, the latter defined by widespread virus occurrence in domesticated livestock. Kenya appears to be particularly vulnerable to epizootics, with 11 outbreaks occurring between 1951 and 2007. The mosquito species Aedes mcintoshi (subgenus Neomelaniconion) is an important primary vector for RVFV in Kenya...
April 18, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28419283/dna-based-identification-of-forensically-important-blow-flies-diptera-calliphoridae-from-india
#3
Meenakshi Bharti, Baneshwar Singh
Correct species identification is the first and the most important criteria in entomological evidence-based postmortem interval (PMI) estimation. Although morphological keys are available for species identification of adult blow flies, keys for immature stages are either lacking or are incomplete. In this study, cytochrome oxidase subunit 1 (COI) reference data were developed from nine species (belonging to three subfamilies, namely, Calliphorinae, Luciliinae, and Chrysomyinae) of blow flies from India. Seven of the nine species included in this study were found suitable for DNA-based identification using COI gene, because they showed nonoverlapping intra- (0...
April 17, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28419273/habitat-and-density-of-oviposition-opportunity-influences-aedes-aegypti-diptera-culicidae-flight-distance
#4
Heidi E Brown, Jonathan Cox, Andrew C Comrie, Roberto Barrera
Understanding the dispersal of Aedes (aegypti (L.) Diptera: Culicidae) after consuming a potentially infectious bloodmeal is an important part of controlling the spread of the arboviruses it transmits. Because of the impact on abundance, removal of oviposition sites is a key component of vector control. However, source reduction around a case may encourage dispersal of potentially infected vectors. We compare the effect of oviposition site availability on Ae. aegypti dispersal behavior within 30-m linear cages in three model ecosystems at the University of Arizona's Biosphere 2 research facility...
April 15, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28419272/insecticidal-and-behavioral-avoidance-responses-of-anopheles-minimus-and-culex-quinquefasciatus-diptera-culicidae-to-three-synthetic-repellents
#5
Wasana Boonyuan, Sunaiyana Sathantriphop, Krajana Tainchum, Vithee Muenworn, Atchariya Prabaripai, Michael J Bangs, Theeraphap Chareonviriyaphap
Escape responses, knockdown (KD), and toxicity of laboratory strains of Anopheles minimus Theobald and Culex quinquefasciatus Say to three synthetic mosquito repellents, DEET (N, N-diethyl-3-methylbenzamide), IR3535, or picaridin, at 5% v/v concentrations, were evaluated using repellent-treated papers in standard WHO tube assays and an excito-repellency (ER) test chamber system. The tube assays recorded knockdown effects of each repellent immediately after 30-min exposure and the final morality following a 24-h holding period...
April 15, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28419266/the-effect-of-parasitism-and-interpopulation-hybridization-on-aedes-albopictus-diptera-culicidae-fitness
#6
Michelle Tseng
Recent research in mosquito population genetics suggests that interpopulation hybridization has likely contributed to the rapid spread of the container-breeding mosquitoes. Here, I used laboratory experiments to investigate whether interpopulation Aedes (Stegomyia) albopictus (Skuse) F1 and F2 hybrids exhibit higher fitness than parental populations, and whether hybrid mosquito performance is related to infection by the coevolved protozoan parasite Ascogregarina taiwanensis (Lien and Levine). Overall, there were significant differences in development time, wing length, and survival between the two parental mosquito populations, but no difference in per capita growth rate r...
April 15, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28419257/rodent-pika-parasite-spillover-in-western-north-america
#7
Patrick Foley, Tara Roth, Janet Foley, Chris Ray
Competition during the Cenozoic expansion of the Rodentia may have contributed to ecological niche reduction of pikas, which are now increasingly under threat as their habitat degrades under global climate change, while some rodents expand their ranges and overlap with pikas. Range overlap carries the possibility of disease spillover. Contemporary North American pikas are cold-adapted and relegated primarily to alpine environments where they subsist on relatively low-quality herbaceous diet. Yet their evolutionary ancestors were distributed geographically even into the subtropics...
April 15, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28419254/evidence-of-zika-virus-rna-fragments-in-aedes-albopictus-diptera-culicidae-field-collected-eggs-from-cama%C3%A3-ari-bahia-brazil
#8
Chelsea T Smartt, Tanise M S Stenn, Tse-Yu Chen, Maria Gloria Teixeira, Erivaldo P Queiroz, Luciano Souza Dos Santos, Gabriel A N Queiroz, Kathleen Ribeiro Souza, Luciano Kalabric Silva, Dongyoung Shin, Walter J Tabachnick
A major mosquito-borne viral disease outbreak caused by Zika virus (ZIKV) occurred in Bahia, Brazil, in 2015, largely due to transmission by the mosquito, Aedes aegypti (L.). Detecting ZIKV in field samples of Ae. aegypti has proven problematic in some locations, suggesting other mosquito species might be contributing to the spread of ZIKV. In this study, several (five) adult Aedes albopictus (Skuse) mosquitoes that emerged from a 2015 field collection of eggs from Camaçari, Bahia, Brazil, were positive for ZIKV RNA; however, attempts to isolate live virus were not successful...
April 14, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28407077/chemosensory-responses-to-the-repellent-nepeta-essential-oil-and-its-major-component-nepetalactone-by-aedes-aegypti-diptera-culicidae-a-vector-of-zika-virus
#9
Jackson T Sparks, Jonathan D Bohbot, Mihailo Ristic, Danijela Mišic, Marijana Skoric, Autar Mattoo, Joseph C Dickens
Nepeta essential oil (Neo; catnip) and its major component, nepetalactone, have long been known to repel insects including mosquitoes. However, the neural mechanisms through which these repellents are detected by mosquitoes, including the yellow fever mosquito Aedes aegypti (L.), an important vector of Zika virus, were poorly understood. Here we show that Neo volatiles activate olfactory receptor neurons within the basiconic sensilla on the maxillary palps of female Ae. aegypti. A gustatory receptor neuron sensitive to the feeding deterrent quinine and housed within sensilla on the labella of females was activated by both Neo and nepetalactone...
April 12, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28402498/oviposition-strategies-of-florida-culex-melanoconion-mosquitoes
#10
Erik M Blosser, Nathan D Burkett-Cadena
In the genus Culex, oviposition is often generalized as laying floating egg rafts directly on the surface of the water, as reported for arbovirus vectors Culex pipiens L. and Culex tarsalis Coquillett, both members of subgenus Culex. The current work reports on investigations of exceptions to this strategy by species of Melanoconion, a diverse and mostly tropical subgenus of Culex, with many arbovirus vectors. Wild gravid females from Vero Beach, FL, were introduced into outdoor cages with open water, partially covered water, and emergent solid structures for oviposition...
April 11, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28402550/the-impact-of-temperature-and-body-size-on-fundamental-flight-tone-variation-in-the-mosquito-vector-aedes-aegypti-diptera-culicidae-implications-for-acoustic-lures
#11
Susan M Villarreal, Olivia Winokur, Laura Harrington
Aedes aegypti (L.) males use female flight tone as a means of mate localization. By playing the sound of a flying female, males can be attracted to a trap to monitor mosquito populations and the progress of transgenic male releases. However, the female flight tone used to attract males needs to be optimized to maximize trap effectiveness. The fundamental frequency of female flight tone could be influenced by both body size and ambient temperature. However, no analysis yet has considered both the effect of body size and temperature on female flight tone of Ae...
April 10, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28402546/aedes-aegypti-diptera-culicidae-abundance-model-improved-with-relative-humidity-and-precipitation-driven-egg-hatching
#12
Joceline Lega, Heidi E Brown, Roberto Barrera
We propose an improved Aedes aegypti (L.) abundance model that takes into account the effect of relative humidity (RH) on adult survival, as well as rainfall-triggered egg hatching. The model uses temperature-dependent development rates described in the literature as well as documented estimates for mosquito survival in environments with high RH, and for egg desiccation. We show that combining the two additional components leads to better agreement with surveillance trap data and with dengue incidence reports in various municipalities of Puerto Rico than incorporating either alone or neither...
April 10, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28402436/repellency-of-29-synthetic-and-natural-commercial-topical-insect-repellents-against-aedes-aegypti-diptera-culicidae-in-central-mexico
#13
Pablo A Kuri-Morales, Fabián Correa-Morales, Cassandra González-Acosta, Gustavo Sánchez-Tejeda, Miguel Moreno-Garcia, Eduardo Dávalos-Becerril, Marissa F Juárez-Franco, José Ismael Benitez-Alva, Jesús F González-Roldán
In Mexico, the use of repellents to prevent insects from landing and biting is a common practice. However, variation in the efficiency of natural and synthetic repellents has been observed. In this study, we evaluated the repellency and protection time of 16 synthetic and 13 natural-based commercial products against Aedes aegypti (L.) from an endemic dengue area (Jojutla, Morelos) in Central Mexico. The "arm exposure" cage test was used to assess the efficacy of the repellents. Tests were conducted by three adult volunteers...
April 10, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28398534/filth-fly-activity-associated-with-composted-and-noncomposted-beef-cadavers-and-laboratory-studies-on-volatile-organic-compounds
#14
T R Dubie, J L Talley, J B Payne, A W Wayadande, J Dillwith, C Richards
Commercial livestock facilities are faced with the challenge of managing large amounts of waste including manure and animal mortalities. One method of disposing of dead animals is composting. The cadavers are enveloped in carbon material that creates a barrier between the dead tissue and the surrounding environment. Dead tissue can release materials that not only contaminate the soil but also the groundwater and nearby surface water. Animal cadaver composting is designed to facilitate decomposition without the aid of carrion-feeding insects and reduce the presence of common pathogens associated with animal waste and dead tissue...
April 8, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28398487/erratum
#15
(no author information available yet)
No abstract text is available yet for this article.
April 8, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399286/a-new-human-biting-black-fly-species-of-simulium-simulium-diptera-simuliidae-from-thailand
#16
Hiroyuki Takaoka, Wichai Srisuka, Atiporn Saeung
Simulium (Simulium) umphangense, a new human-biting species of black fly, is described based on females captured while attacking humans in western and central Thailand. The female of this new species is similar to those of S. (S.) indicum Becher, S. (S.) nigrogilvum Summers, and S. (S.) vanellum Huang et al. in the Simulium griseifrons species-group of the subgenus Simulium Latreille in having the frons densely covered with golden-yellow short hairs, a character rarely found in the subgenus Simulium. This new species is readily distinguished from the three related species by having a darkened fore tibia, a bare subcosta (or rarely with a few hairs), and an ovipositor valve not protruded posteriorly...
April 7, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399312/wingbeat-frequency-sweep-and-visual-stimuli-for-trapping-male-aedes-aegypti-diptera-culicidae
#17
S S Jakhete, S A Allan, R W Mankin
Combinations of female wingbeat acoustic cues and visual cues were evaluated to determine their potential for use in male Aedes aegypti (L.) traps in peridomestic environments. A modified Centers for Disease control (CDC) light trap using a 350-500 Hz frequency-sweep broadcast from a speaker as an acoustic stimulus, combined with a black poster-board half-cylinder behind the trap as a visual stimulus, captured a significantly greater proportion of males in a laboratory arena during daylight than a CDC trap with the visual stimulus alone or a CDC trap alone without stimuli...
April 5, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399265/survival-of-the-house-fly-diptera-muscidae-on-truvia-and-other-sweeteners
#18
Michael L Fisher, Fallon E Fowler, Steven S Denning, David W Watson
The house fly, Musca domestica L. (Diptera: Muscidae), is a disease vector of mechanically transmitted pathogens including bacteria, viruses, and protozoans. Opportunities for pathogen transmission can increase as fly longevity increases. Dietary preferences play an important role in insect longevity; therefore, we investigated house fly preferences, sucrose availability, and caloric constraints on house fly longevity. Experimental goals were: 1) to test the effects of calorie restriction on survival of house flies by manipulating concentrations of erythritol (low caloric content) and sucrose (high caloric content), and comparing commercial sweeteners of differing calorie content, 2) to identify house fly preferences for either erythritol or sucrose, and 3) to evaluate the insecticidal activity or toxicity of erythritol on house flies...
April 5, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399298/an-early-holocene-record-of-cimex-hemiptera-cimicidae-from-western-north-america
#19
Martin E Adams, Dennis L Jenkins
The subfossil remains of 14 cimicids (Hemiptera: Cimicidae) were recovered during archaeological investigations of the Paisley Five Mile Point Cave site (35LK3400), an exceptionally well-dated (n = 229 radiocarbon dates) late Pleistocene-early Holocene rock shelter site in south-central Oregon. Nine of the specimens have been assigned to three modern species of Nearctic Cimicidae-Cimex antennatus Usinger & Ueshima, Cimex latipennis Usinger & Ueshima, and Cimex pilosellus (Horváth)-whereas the remaining five individuals were too fragmentary to positively identify...
April 4, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28399288/two-new-species-of-oxysarcodexia-townsend-diptera-sarcophagidae-from-the-chaco-forest-ecoregion-of-south-america
#20
M I Dufek, P R Mulieri
Two new Neotropical species of the genus Oxysarcodexia Townsend (Diptera: Sarcophagidae) from Chaco ecoregion of Argentina are described, O. berthet, sp. nov. and O. ibera, sp. nov. Both species were recovered from localities in the eastern part of the Chaco forest (Humid Chaco). The descriptions are based on the male external morphology and terminalia. Photographs and SEM images are provided to aid in the identification of the species.
April 3, 2017: Journal of Medical Entomology
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